Carbon and oxygen isotope record and sedimentology/facies across selected time slices in the Mid Paleozoic in Vietnam

越南中古生代选定时间片的碳和氧同位素记录和沉积学/相

• 批准号: 262627513
• 负责人: Dr. Peter Königshof
• 金额: --
• 依托单位: Forschungsschwerpunkt Krustendynamik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2014
• 资助国家: 德国
• 起止时间: 2013-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/262627513?language=en
• 关键词: Carbon; oxygen; isotope; record; sedimentology

The Devonian was a time of dynamic long-term climate change and substantial changes in biodiversity. The rapid rise of land plants during the Middle Devonian was coupled with rapidly decreasing atmospheric CO2 values from 4000 ppm to nearly present day values of about 350 ppm during the latest Devonian. Reef ecosystems became extinct in the late Frasnian during the Frasnian/Famennian (F/F) mass extinction event. This event is one of the Big Five extinction events beside other events in the mid-Paleozoic. Most studies of mass extinction events are located around the Rheic Ocean, while other areas such as the Paleo-Tethys remain poorly documented. Our goal in this project is to use geochemical proxies to evaluate the presence of anoxic events associated with important extinctions in the mid-Paleozoic in basinal settings (sections in northern and southern Vietnam) and to compare the results with known data from elsewhere in Asia, particularly with South China. The results will contribute to a better understanding of climate variations and will improve carbon isotope stratigraphy of the Devonian and the Carboniferous.

泥盆纪是一个动态的长期气候变化和生物多样性的重大变化的时期。中泥盆世期间陆地植物的迅速增加，加上大气中的CO2值迅速下降，从4000 ppm到近今天的值约350 ppm，在最新的泥盆纪。珊瑚礁生态系统在弗拉斯期晚期的弗拉斯期/法门期（F/F）大灭绝事件中灭绝。这一事件是与古生代中期其他事件并列的五大灭绝事件之一。大多数关于大灭绝事件的研究都集中在里克洋周围，而其他地区，如古特提斯，仍然缺乏记录。我们在这个项目中的目标是使用地球化学代用指标，以评估存在的缺氧事件与重要的沉积盆地设置（部分在北方和越南南部）在中古生代，并比较结果与已知的数据从亚洲其他地方，特别是与中国南方。研究结果将有助于更好地了解气候变化，并将改善泥盆纪和石炭纪的碳同位素地层学。

项目成果

Devonian-Carboniferous transition containing a Hangenberg Black Shale equivalent in the Pho Han Formation on Cat Ba Island, northeastern Vietnam

• DOI: 10.1016/j.palaeo.2014.03.021
• 发表时间: 2014-06
• 期刊: Palaeogeography, Palaeoclimatology, Palaeoecology
• 作者: T. Komatsu;S. Kato;Kento Hirata;R. Takashima;Yukari Ogata;M. Oba;H. Naruse;P. Tạ;Phong Nguyen;H. T. Dang;T. N. Doan;H. H. Nguyen-H.;S. Sakata;K. Kaiho;P. Königshof

PRECLUDING VOLCANISM AS PRIMARY TRIGGER FOR DEVONIAN-CARBONIFEROUS GLOBAL ANOXIA EVENT: IMPLICATIONS OF THE HANGENBERG EVENT IN THE LATE DEVONIAN PHO HAN FORMATION, CAT BA ISLAND, VIETNAM

排除火山作用是泥盆纪-石炭系全球缺氧事件的主要触发因素：Hangenberg 事件对越南吉婆岛晚泥盆世 PHO HAN 地层的影响

• DOI: 10.1130/abs/2017am-301081
• 作者: Paschall;Carmichael;Waters;Königshof;Joachimski;Komatsu
• 通讯作者: Komatsu

U-Pb detrital zircon geochronology of sedimentary rocks in NE Vietnam: Implication for Early and Middle Devoni-an Palaeogeography

• DOI: 10.15625/0866-7187/39/4/10727
• 发表时间: 2017-09
• 期刊: VIETNAM JOURNAL OF EARTH SCIENCES
• 影响因子: 1.5
• 作者: P. Königshof;U. Linnemann;T. Phương

Devonian events: examples from the eastern Palaeotethys (Si Phai section, NE Vietnam)

• DOI: 10.1007/s12549-017-0272-5
• 发表时间: 2017-03
• 期刊: Palaeobiodiversity and Palaeoenvironments
• 影响因子: 1.4
• 作者: P. Königshof;K. Narkiewicz;P. T. Hoa;S. Carmichael;J. Waters